Home / 709,819.20-1,064,728.80-651,758.40

Finding the Fourth Proportional to 709,819.20, 1,064,728.80 and 651,758.40

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Solution

The fourth proportional to 709,819.20, 1,064,728.80 and 651,758.40 is: 977,637.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,819.20 : 1,064,728.80 = 651,758.40 : x
  2. Step 2: Convert to fraction form
    709,819.20/1,064,728.80 = 651,758.40/x
  3. Step 3: Cross multiply
    709,819.20x = 1,064,728.80 × 651,758.40
  4. Step 4: Simplify right side
    709,819.20x = 693,945,939,121.92
  5. Step 5: Solve for x
    x = 693,945,939,121.92/709,819.20
  6. Step 6: Final answer
    x = 977,637.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.